[TowerTalk] Antenna/Tower Grounding (Lightning Protection)

ersmar at comcast.net ersmar at comcast.net
Thu Jan 4 12:11:44 EST 2007


Jim:

----- Original Message ----- 
From: "Jim Lux" <jimlux at earthlink.net>
To: <ersmar at comcast.net>; "Richard W. Solomon" <w1ksz at earthlink.net>; 
<towertalk at contesting.com>
Sent: Thursday, January 04, 2007 10:10 AM
Subject: Re: [TowerTalk] Antenna/Tower Grounding (Lightning Protection)



>>2.    Your tower ought to have at least one ground wire, minimum of #8 
>>gauge wire, to one ground rod within two feet of each tower leg.  The 
>>latest version of the National Electrical Code mandates two ground rods 
>>and two wires at each leg.
>
>
> Really?  Which code? The 2005 NEC is silent on towers, per se.  Art 810.15 
> says masts and metal structures shall be grounded in accordance with 
> 810.21.  810.21 just has the stuff about the size of the wire, straight 
> line runs, protection of the connections, and what can serve as a 
> grounding electrode.
>
> Art 820 (CATV etc) has very similar provisions.
>
>
> Maybe you're thinking of some lightning protection code? Or a 
> recommendation of a manufacturer?
>
>
> Jim, W6RMK
>
>

     I'm pretty sure I read about these new grounding requirements in the 
latest (2008) proposed NEC here on TowerTalk within the past six months or 
so.  I can't just yet find that reference in the archives.  I'll do more 
searching and report back to the reflector.  But I'm just as certain what I 
read was not something from a manufacturer.

73 de
Gene Smar  AD3F



 



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